25AA020A/W16K

Product Overview

Category: Non-volatile Memory
Use: Data storage and retrieval
Characteristics: High-speed, low-power, small form factor
Package: SOP-8
Essence: Serial EEPROM
Packaging/Quantity: Tape and Reel / 2500 units per reel

Specifications

• Memory Size: 2 Kbits (256 bytes)
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Write Endurance: 1 Million cycles
• Data Retention: 200 Years
• Clock Frequency: Up to 10 MHz

Detailed Pin Configuration

| Pin Name | Description | |----------|-------------| | VCC | Power Supply (1.8V to 5.5V) | | GND | Ground | | CS | Chip Select | | SCK | Serial Clock | | SI | Serial Input | | SO | Serial Output | | WP | Write Protect | | HOLD | Hold Input |

Functional Features

• Byte-wise Read and Write operations
• Sequential Read mode for faster data access
• Software and Hardware Write Protection
• Deep Power-down mode for ultra-low power consumption
• Self-timed Erase and Write cycles
• Flexible write enable latch

Advantages

• Small form factor allows integration in space-constrained designs
• Low power consumption extends battery life in portable devices
• High-speed data transfer enables quick access to stored information
• Wide operating voltage range provides compatibility with various systems
• Long data retention period ensures reliable storage of critical information

Disadvantages

• Limited memory size may not be suitable for applications requiring larger storage capacity
• SPI interface may not be compatible with all systems, requiring additional circuitry for conversion

Working Principles

The 25AA020A/W16K is a Serial EEPROM (Electrically Erasable Programmable Read-Only Memory) that utilizes the SPI interface for communication. It stores data in non-volatile memory cells, allowing information to be retained even when power is removed. The device can be accessed and programmed byte-wise, offering flexibility in data manipulation. It also features write protection mechanisms to prevent accidental modification of stored data.

Detailed Application Field Plans

The 25AA020A/W16K finds applications in various fields, including:

1. Consumer Electronics: Used for storing configuration settings, user preferences, and firmware updates in devices such as smartphones, tablets, and digital cameras.
2. Automotive: Employed for storing critical data like mileage, vehicle settings, and diagnostic information in automotive electronics.
3. Industrial Automation: Utilized for storing calibration data, sensor configurations, and system parameters in industrial control systems.
4. Medical Devices: Used for storing patient data, device settings, and firmware updates in medical equipment like infusion pumps and patient monitors.

Detailed and Complete Alternative Models

1. 25LC020A: Similar specifications and functionality, available in DIP package.
2. AT25020A: Comparable performance and features, offered by Atmel Corporation.
3. M95010: Equivalent capacity and interface, manufactured by STMicroelectronics.

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